Drawbridge circuit-controller.



F. MARSELLIS.

DRAWBRIDQE CIRCUIT CONTROLLER.

APPLICATION FILED NOV. 12' l9l2.

Patented May 11, 1915.

2 SHEETS-SHEET 1- FIG. 1

24 wlmsssss F. MARSELLIS.

DRAWBRIDGE CIRCUIT CONTROLLER.

APPLICATION FILED NOV.- 12' I912.

Patented May 11,1915.

' 2 SHEETS-SHEET 2.

ill 22 INYENTOR X LARK: E

a di di Q L I WIT N ESS ES" roan itrAnsELms, or BERKELEY, CALIFORNIA.

nmwnmnen amour-commune.

To all wkomtt ma concern.

Be it known t at I, Foim' MAItsEnLIs, a citizen of the United States,residing at Berkeley,- in the county of Alameda and State of California,have invented certain new and useful Improvements 1nv DrawbridgeCircuit-Controllers, of which the following is a specification Myinvention relates to for drawbridges. p

I will describe one form of circuit controller embodying my invention,and then point outthe novel fea-tures thereof in claims.

In the accompanying drawings, Figure 1 is a top plan view showing oneform of circuit controller embodying my invention, the covers beingremoved. Fig. 2 is a seccircuit controllers tional view on the line 2,-2of Fig. 1 looking in the direction of the arrows. Fig. 3 is anend viewof the portion A of the circuit controller shown in Figs. 1 and 2. Fig.4 is afragmental view showing in detail part of the circuit controllershown in the pre ceding views. T

Similar reference characters refer to similar parts in each oftheseveral views.

Referring now to the drawings, A and B designate two parts of thecircuit controller, one of which parts may be'located on the drawbridgeproper and theother on the abutment. For purposes of the presentspecification it will be assumed that the part A is located on thebridge proper. and that the partB is located on the abutment.

Mounted in the art B is a set of contact fingers 12 which gers are hereshow! as stationary. Mounted in the part A. is onset of contact fingers28 which slide longitudinally into andout of engagement with fin gers 12in a mannerhereinafter-explained.

The part B comprisesa case '10 which may besecure'd'to the abutment bymeans of bolts orla screws passing through holes 1nl1ps 13. his case isprovided with acover-.14

(see Fig. 2) which is held in place by screws 15 in' the ease-which fi'tinto suitable elon-' gated slots 16 in the cover.

which'carries the contact fingers 12.- Ashore shown this block is'ofmetal; it rests upon projecting shoulders 16 formed-id the case 10 andis held in. place by screws 17- passing throughthe'walls of thecase: Theblock 11 provided. with pairs of holes throu his which pass bolts s: and19'- which hold t e S peciflcationof Letters Iatent.

Application flled November 12, 1918. Serial No. 780,874.

Mounted within the cast-1M5 a block 11' a Patented May 11, 1915.

contact-fingers 1-2 in place. These bolts and fingers are-insulatedfrom-the block 11 by insulating washers and strips as clearly shown inFig. 2. Each ofthe. bolts 19 is provided with washers and an additionalnut so that by means of these bolts electric wires may be connected withthecontact fingers 12.

These wires pass out through suitable holes 44 in the back of'the case.

As here shown, the fingers 12 are in pairs, the fingers of each pairbeing mounted respectively on the top and bottom of the block' 11. Thetwo fingers of each air are bent toward each other so that t ey normallytouch or almost touch, and the ends of the fingers beyond the touchingpoint'are flared outwardly in opposite direction to serve as guides toassist contact fingers 28 to enter between them. In the particularconstruction here shown, each finger 12 is formed of two-portions, amain portion 12 which is secured to the block-11, and an end portion 12which is secured to themain portion 12 by meansof rivets. The inner endsof the end portions-w erebent toward each other as shown te make contactat ,additional points 12 with fin rs 28.

I Thepart A of t e circuit'controllercomprises a uide plate 20 whichrests upon the drawbri go and which may beisecured there to by means ofboltsor lag-screwspassing through holes 21. The guide plate 20sprovided'withguiding grooves in the following manner.

of'these strips a second strip is placed and securedto-the late byscrews 45. The strips 2sl'overhang t e' inside edgesof the strips 2% andthereby form grooves'for a" purpose whieh I will now explain.

Mounted on the guide plate 20 is a case 25 which fits betweenthe-strips24t and whose sides near thebottom are providedwith lips 26Which fit into the grooves in the guide Along two sides of the plate 20are riveted strips 23, and upon each plate. Itwill beseeii thereforethatthe case may slide back and forth in the guideplate but cannot beraised therefrom except by removing the plates24. The case 25 is"rovided with; a cover 43 which is secured-thereto in a manner similar tothathereinbefore I explained forthe cover of case 10.

Mounted within the case 25 is a block 2T -Y Y which carries-thecontact-fingers 28. a This block is not"rigidlyfixed to the case25gbutis pivotally mounted therein in the' following' manner. Fastened tothemes-sw ns with a hole 33.

Mounted in the bottom of the case is a stud '34 which passes verticallyupward through the hole 33 in the leveling arm and is threaded at thetop to receive one or more nuts 46.

Surrounding the stud 34 are two spiral springs 35, one above and onebelow the leveling arm 32. These springs are compressed by the nuts 46and bear upon the upper and lower faces. of the leveling arm therebyholding the arm and the block 27 normally in such position that thecontact 25 fingers 28 are horizontal.

By varying the position of the nuts 46 the compression of the springscan be varied, and the normal position of the fingers 28 can thereby bevaried through a small angle above and be 30 low the horizontal tocompensate for variationsin the normal vertical alinement of the twosets of fingers 28 and 12.

otal mounting of the block 27 andfingers 28,

these fingers may oscillate and thereby avoid strain on the'contactfingers during vertical movements of the drawbridge relative to theabutment.

I will now explain the mannerin which,

40 as here shown, the contact, fingers 28 are mounted in block 27. Thefront face of block 27 v is provided with flaring lips 38 wh1ch form agroove in which rest the butts of the fingers28. Each finger is providedwith a stud'39 which passes through a suitable hole in the block 27. Thestuds and other parts of the fingers are-insulated from 'the block 27.(whlch as here shown is of metal) by suitable bushings and strips of in-.50 sulating material as shown; The outer end of each stud 39 isthreaded, the threaded portion being provided with a nut and.

washer by means of which the contact-finger is held in place in theblock 27. Also screwed onto the threaded portion of each stud 39 is aterminal post 40'to which a wire 4T may be secured for electricalconnection with the'contact finger. This temiinal post is held inplaceby one or more other nuts.-

.65 from therein. By means of this construction, all flexure of thewires occurs outside of thecase 25 where there is plenty of space, hencethe liability of breakage of the wires due to flexure is much less thanif the flexure occurred within the case.

The case 25 is reciprocated on the. base plate by means of a pipe or rod47 which is N connected with the case by a connecting jaw 48 and pin 49.These reciprocating movements of course move the contact fingers 28 intoand out of engagement with fingers 12,

thereby closing and opening the circuits controlled by the circuitcontroller. 4

Although I have herein shown and described only one form of circuitcontroller embodying my invention, it is understood that various changesand modifications may be made therein without departing from the spiritand scope of my invention.

Having thus described my invention, what I claim is 1. A drawbridgecircuit controller comprising two cooperating sets of contact fingersone of which sets is mounted on the drawbridge and the other on theabutment,

a block carrying one of said sets said block being pivotally mounted toprevent straining the fingers during vertical movements of the bridgerelative to the abutment, a leveling arm secured to the said block, and

springs acting upon said leveling arm for biasing said block to normalposition. It will be seen that by means of the pivbridge and the otheron the abutment, and

one of which sets is movable longitudinally into and out of engagementwith the other,

a block carrying one of said sets said block bein pivotally mounted -topermit vertical oscil ation of the fingers carried thereby, a

leveling arm secured to the said block, springs acting upon saidleveling arm for biasing the block to normal position, and means forvarying the compression of said springs to vary the normal position ofthe said block.

3.. A drawbridge circuit controller com-- prising two cooperating setsof contact fin ers one of which sets is movable longitu mally into andout of engagement with the other, a block carrying one of said sets mitoscillations of the fingers carried thereby, a leveling arm secured tosaid block, a hole in the arm, a stud fixed with respect to the arm andpassing through the hole and two coiled springs on the stud one on eachside of the arm? 4. A drawbridge circuit controller comggsmg twocooperating sets 1 of contact (gielifs one of'which sets is movablelongitu ally into and out of engagement with the-other, a block carryingone of said sets said block being pivotally mounted to persaid blockbeing pivotally mounted to per- 20 for movin one of said sets oitudinally. 1nto and agent of engagement with 30 inga mit oscillationsofthe fingers carried there by, a leveling arm secured to said hlOQkyflhole in the arm, a stud fixed with respectto the arm and passing throughthehole, and

5 two coiledsprings on the studone on each side ofthe arm, and a nut-onthe stud for varying the compression of the springs.

5. A drawbridge circuit controller" comprising a set of horizontallyspaced contact fingers, va second set of contact fingers'ar rangedin'pairs, thepairsbein horizontally spaced to register with the gers ofthe first set and the fingers of each pair being mounted one above theother. to receive be-. tween them. the re 'stering finger ofhe first setone of SEldySGiJS being piv'ota ly mounted to permit of oscillation in avertical plane to compensate for vertical relative movement of the twosets and means lingers longithe other set., r

6'. A circuit controller comprising two separable parts one adapted tobe mounted separable parts one adapted to be mounted on one of twoseparable members adapted 40 to'be brou ht together and the otherartadapted to e-mounted en the-other mem er, one of said partscompr1singaset-of contact f fingers,'and the other of saidparts comrisin-presence 0 -ed on trunnions in thecase, and a second set ofcontact fingers carried by said block and adapted toengage with thefirst named i set of contacts.

8. A circuit controller comprising 'twoaw v separable parts one adaptedto be mounted on one of two separable members adapted to be broughttogether, and the other part adapted to be mounted on the othermemberyone of said members being capable of vertical movement withrelation to the other after engagement of said arts, one of said partscomprising a set 0 contact fingers; and the other of said partscomprising a block pivotally. mounted for oscillation in a verticalplane, a second set of contact fingers mounted on said block and adaptedto engage with the first-mentioned contacts, and

.means for biasing said block to the normal position,

'9. A circuit controller comprising two separable rpart's'one adapted tobe mounted on one of two separable members adapted to be broughttogether, and the other-part adapted to be mounted on the other member,one of said members being capable ofmove- 'ment in one direction withrelation to the othenafter the engagementwf said parts; one of said artscomprising a set of contact fingers fan the other of said partscomprising a block pivotally mounted for oscillation in the samedirection as the said relative movement of the one member, a second set]of. contact fingers mounted on saidblock and adapted to engage with thefirst-mentioned contact fingers when .the said parts are broughttogether, and means for blasmg said .blo ck to a normal positiomIn-testimon -whereof'I afiix my signature 7 twe witnesses. a.EORDMARSELLIS; Witne'sses: j a I ARTHUR V. As'rmr, OHN, L.

